| # https://github.com/pypa/pipenv/issues/1049 | |
| # https://github.com/pypa/pipenv/blob/a4aca53b5d02a4168214a487714d9836c9415a0c/pipenv/project.py#L116 | |
| # How pipenv calc virtualenv name in `~/.local/share/virtualenvs/` | |
| import os, re, base64, hashlib | |
| def virtualenv_name(path): | |
| sanitized = re.sub(r'[ $`!*@"\\\r\n\t]', '_', os.path.basename(path))[0:42] | |
| hash = hashlib.sha256((path+'/Pipfile').encode()).digest()[:6] | |
| encoded_hash = base64.urlsafe_b64encode(hash).decode() | |
| return sanitized + '-' + encoded_hash |
| #!/bin/bash | |
| # ssh [email protected] "tcpdump -w - -U 'host g.cn'" | sudo wireshark -k -i - | |
| # tcpdump Capture on remote host (by ssh) & Show packets on local wireshark | |
| # $remote Need Capture permission | |
| # $filter is tcpdump capture filter | |
| # example: | |
| # $ wireshark_remote [email protected] 'host yurenchen.com' | |
| wireshark_remote(){ |
| //test js | |
| console.log('hello') |
| " show line number | |
| set nu | |
| " hi cursor line | |
| set cursorline | |
| "hi CursorLine cterm=NONE ctermbg=darkred ctermfg=white | |
| "hi CursorLine cterm=NONE ctermbg=darkred | |
| " highlight search | |
| se hls |
| sudo ifconfig eth0 mtu 1200 |
$ opkg --help
compare-versions <v1> <op> <v2>
compare versions using <= < > >= = << >>
$ man build_dir/hostpkg/opkg-2017-12-07-3b417b9f/man/opkg-cl.1.in
compare-version <version1> <operator> <version2>
compare versions using following operators :
| // golang hide cmdline usage & parse err | |
| flag.CommandLine.SetOutput(ioutil.Discard) | |
| flag.Usage = func() { } | |
| flag.Parse() |
| #!/usr/bin/awk -f | |
| # from https://sites.google.com/site/dannychouinard/Home/unix-linux-trinkets/little-utilities/base64-and-base85-encoding-awk-scripts | |
| # | |
| # compatible with busybox: | |
| # no od, awk not print \0 | |
| function encode64() { | |
| while( "hexdump -e ' \"%07.7_ax \" 16/1 \"%02x \" \"\n\"'" | getline ) { | |
| for(c=9; c<=length($0); c++) { | |
| d=index("0123456789abcdef",substr($0,c,1)); |
| # http*_proxy | |
| export http_proxy=socks5://proxyAddress:port | |
| export https_proxy=socks5://proxyAddress:port | |
| # OR all_proxy | |
| export all_proxy=socks5://proxyAddress:port | |
| # ---------------- |